Mata took to social media to wish his ousted manager well after Roman Abramovich ruthlessly dispensed of the Italian in the early hours of Wednesday morning.
Star playmaker Mata posted on Facebook: “It’s been a difficult day. Roberto Di Matteo is no longer our manager.
“I would like to thank him for all this time with us and wish him the best of luck for the future.
“As a player, he has been a legend for the ‘Blues’. With him as a manager, we won our first Champions League.
“He will always be remembered. Good luck Robbie!”
A goal apiece from James Tomkins and Luka Milivojevic handed Crystal Palace a crucial 2-0 win over Huddersfield at the John Smith's Stadium on Saturday evening.
Manchester United bounced back from their Champions League exit as they beat Brighton 2-0 at Old Trafford on Saturday night to reach the FA Cup semi-finals.
Tottenham reached the FA Cup semi-finals after they cruised to a 3-0 victory over Swansea in their quarter-final clash at the Liberty Stadium on Saturday.
Premier League basement club West Brom squandered the lead as they suffered a 2-1 defeat to Bournemouth at the Vitality Stadium on Saturday.
Chesterfield boss Jack Lester felt his side were unlucky not to claim all three points after their 1-1 draw at Cheltenham.
New Swindon manager Phil Brown revelled in his side's victory at Cambridge in his first game in charge.